Heart inflammation is a known risk from mRNA vaccines European Medicines Agency (BBC report) https://www.bbc.com/news/health-57781637 "The link with heart inflammation was found only in the vaccines that rely on mRNA technology to train the immune system. There was no link found for vaccines such as Oxford-AstraZeneca or Janssen, which use a genetically modified virus. However, the EMA has advised anyone with a history of capillary leak syndrome should not be given the Janssen vaccine. This is a rare but serious syndrome in which fluid leaks from blood vessels in the body." What data does YTG/Department of Health have that demonstrates merely switching between mRNA vaccines for those under 18 years of age, will not have the same or increased risk of heart inflammation (also stroke, blood clots, partial paralysis) as the other mRNA vaccine? What steps is YTG/Department of Health implementating to eliminate these known risks - especially for children that are the lowest risk for serious effects from covid? Timeframe: January 1, 2021 - December 1, 2021